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A kind of activated carbon electrothermal regeneration equipment and using method thereof

A regeneration equipment, activated carbon technology, applied in separation methods, filter regeneration, chemical instruments and methods, etc., to achieve the effects of small footprint, low carbon loss rate, and low regeneration temperature

Active Publication Date: 2019-01-22
SHANGHAI LYMAX ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many activated carbon regeneration methods. According to different application conditions, researchers at home and abroad have proposed various activated carbon regeneration methods, such as thermal regeneration, wet oxidation, biological regeneration, electrochemical regeneration, microwave radiation regeneration, and supercritical fluid regeneration. However, only thermal regeneration has been widely used in industry

Method used

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  • A kind of activated carbon electrothermal regeneration equipment and using method thereof
  • A kind of activated carbon electrothermal regeneration equipment and using method thereof
  • A kind of activated carbon electrothermal regeneration equipment and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 Electrothermal regeneration

[0038] After the activated carbon is saturated, close the tank, turn on the power supply 7, energize the electrode 2 to generate heat, raise the temperature in the tank 1 to 200°, and keep it for 20-30 minutes. After the end, open the exhaust port 3 and empty the tank Internal steam; after the steam is emptied, close the exhaust port 3 and the drain port 5, open the water inlet 4 and the water outlet 6, and the equipment will switch to normal adsorption operation. Regularly detect the COD of the water outlet 6. The test results are shown in Table 1. According to the results, it is found that the activated carbon is directly regenerated after the adsorption is saturated. After the regeneration, the adsorption capacity of the activated carbon was not completely restored, and the recovery was 83.3%, that is, the time required for the adsorption saturation of the activated carbon obtained in this example was 83.3% of the 48 hours r...

Embodiment 2

[0041] Example 2 Pure water backwashing and electrothermal regeneration

[0042] After the activated carbon is adsorbed and saturated, the carbon bed is backwashed with pure water first, and then regenerated by electric heating. The operation is as follows: only open the water outlet 6 and the water outlet 5, and the backwash water enters the water outlet 5 from the water outlet 6 to be discharged, and the backwash time is 2-3 minutes. After recoil, turn on the power for heating and regeneration. When the temperature rises to 200 degrees, keep at 200 degrees for 20-30 minutes, and then discharge the steam in the tank from the exhaust port 3. After the end, open the exhaust port 3 to empty the tank Steam; after the steam is emptied, close the exhaust port 3 and the drain port 5, open the water inlet 4 and the water outlet 6, and the equipment will switch to normal adsorption operation. Regularly detect the effluent COD of water outlet 6, and the test results are shown in Table...

Embodiment 3

[0045] Example 3 Pure water backwash, hydrochloric acid backwash, pure water backwash again and electric heating regeneration

[0046] Activated carbon adsorption is saturated, first use pure water to backwash the carbon bed, then backwash with hydrochloric acid, then backwash with pure water, and finally perform electric regeneration. The operation is as follows: only open the water outlet 6 and the water outlet 5, and the backwash water enters the water outlet 5 from the water outlet 6 to be discharged, and the backwash time is 2-3 minutes. After backflushing, add hydrochloric acid with pH=2 into the regeneration equipment through water outlet 6, soak for 5-10 minutes, then discharge the hydrochloric acid through water outlet 6, and then perform a pure water backwash for 2-3 minutes. After recoil, turn on the power for heating and regeneration. When the temperature rises to 200 degrees, keep at 200 degrees for 20-30 minutes, and then discharge the steam in the tank from the ...

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Abstract

The invention discloses activated carbon electro-thermal regeneration equipment and a using method thereof. The equipment is characterized by comprising a tank body, an electrode and a power supply, wherein a water inlet, a water draining port and a vent port are formed in the top of the tank body, and a water outlet is formed in the bottom of the tank body; the electrode is positioned in a fixed carbon bed inside the tank body, and is connected with the power supply. The activated carbon electro-thermal regeneration equipment integrates absorption and regeneration into a whole, the activated carbon does not need transfer or drying treatment after saturated absorption, electro-thermal regeneration is carried out at 150-200 DEG C by direct electrification in situ, steam is vented from the vent port after regeneration is completed, and the equipment is turned into normal absorption operation.

Description

technical field [0001] The invention relates to the field of activated carbon adsorption and regeneration, in particular to an activated carbon electric heating regeneration device and a use method thereof. Background technique [0002] Activated carbon is a carbonaceous material with developed pore structure, large specific surface area and strong adsorption capacity. It is widely used in the water treatment industry. Activated carbon will inevitably reach adsorption saturation after a period of time, and the adsorption efficiency will decrease. If it is directly discarded and replaced with new carbon, it will not only pollute the environment but also generate a lot of waste of resources and increase operating costs. Therefore, after the activated carbon is saturated, it can be regenerated in order to save resources and reduce operating costs. Activated carbon regeneration is to treat the activated carbon saturated with various impurities through physical, chemical or bioc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01J20/20
CPCB01J20/3416B01J20/3441
Inventor 傅立德
Owner SHANGHAI LYMAX ENVIRONMENTAL TECH CO LTD
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